The invention relates to systems and methods for adjusting one or more dialysis parameters for delivering a peritoneal dialysis cycle to a patient based on patient or system parameters. The systems and methods include various sensors, flow paths, and processors to adjust the dialysis parameters used to deliver peritoneal dialysis therapy, for a specific peritoneal dialysis cycle. For example, a first peritoneal dialysis cycle can provide data on patient or system parameters that can be used to adjust the dialysis parameters used to deliver a subsequent peritoneal dialysis cycle. One or more peritoneal dialysis cycles are contained in a particular peritoneal dialysis therapy session. Patient parameters can include patient blood pressure; volume of fluid removed; patient goal; blood solute level; effluent solute level; effluent temperature; effluent color or clarity; patient posture; tidal volume remaining in patient; and intraperitoneal pressure.